Liquid dispensing pump



A. LARSEN 1,944,288

LIQUID DISPENS ING PUMP Jan. 23, 1934.

2 Sheets-Sheet 1 Filed Jan. 7, 1931 Inventor? alrec/atliar Jan. 23, 1934. A. LARSEN LIQUID DISPENSING PUMP Filed Jan. 7, 1931 2 Sheets-Sheet latented Jan. 23, 1934 STATES PATENT OFFICE This invention relates to a liquid dispensing apparatus. Generally it relates to a liquid dispensing pump of the type used for dispensing fuel.

It has for one object to provide a device in which the overflow tank is located within the housing of the pump and close to the dispensing tank. Another object is to provide an overflow tank of a size sufiicient to accommodate the entire contents of the dispensing tank. A further object is to provide a dispensing tank of such design that it may be connected with a main tank underground by a single pipe and in which adequate overflow provision is made without the necessity of using more than one pipe or connection from the pump to the storage tank underground.

Other objects will appear from time to time in the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein- Figure 1 is an elevation of the pump installed, with parts in section;

Figure 2 is a vertical cross section taken at right angles to the plane of Figure 1;

Figure 3 is a vertical cross sectional detail showing the outlet valve of the overflow tank;

Figure 4 is a sectional detail showing the means for receiving and locking the hose nozzle;

Figure 5 is a detailed sectional view, showing the hose engaging member;

Figure 6 is a plan View of a portion of the nozzle on an enlarged scale;

Figure 7 is a detailed view showing in elevation a closing member for the hose nozzle opening.

Like parts are designated by like characters throughout the specification and drawings;

A indicates a foundation which may be of any suitable material to support the pump. Generally it will be of concrete or stone and will be supported on the ground. A is a housing for the lower part of the pump assembly and houses the actual pumping unit. The housing A may be of any suitable design and its particular details form no part of the present invention. It is sufficient that it support and enclose the pump mechanism and support the upper portion of the pump assembly. Supported on the housing portion A is a partition or division A which forms the bottom of and carries a casing or housing A which forms in itself an overflow tank. At its top the portion A is closed by a division A which forms the top of the overflow tank and the bottom of the actual dispensing tank. This latter is preferably formed by a housing or containing member A which is normally transparent, being usually made of glass so that the contents of the tank may be seen at all times. The dispensing tank A is closed at its top by a member A which may be perforated as at A and hasa transparent member A closing the perforation A". A cover member A may be superimposed on top of the pump and overlies the member A It may or may not be transparent. Frequently an advertising device will be substituted for the member A Tie members A may be used to hold the parts in position and to engage and hold the transparent walls of the dispensing tank A in position. Similarly tie members A may be used within the housing A and they serve, among other purposes, to hold the partition member A in position on the housing member A A is a storage tank normally located under the ground. It may be closely adjacent to the pump or may be widely separated from it.

B is a pipe leading from the tank A and having a check valve B at or near its lower end. This valve permits liquid to be drawn into the .pipe B, but prevents it from running out of the pipe at its lower end. It thus serves to prevent back flow from the pump into the storage tank. Adjacent its upper end the pipe B has a second check valve B which additionally serves to prevent liquid from running back down the pipe B. The pipe B is connected at its upper end to a pump B which may be of any suitable type and may be driven by a shaft B from any suitable power source. None is here shown as the details and method of driving the pump form no part of the present invention. B is a discharge piperunning from the pump B upward. It may run through the overflow tank A and into the dispensing tank A into which it discharges. B is a bafiie situated at the upper or discharge end of the pipe B As shown, the pipe B is made of several sections. It might, of course, be made of one continuous section or pipe. Its purpose is to deliver liquid from the pump to the dispensing tank. B is an overflow pipe running from the dispensing tank A to the overflow tank A B is a pipe running from the bottom of the overflow tank to the pipe B adjacent the point of connection of the latter with the pump B Preferably the point of connection of the pipe B with the pipe B is above the upper check valve B A float operated valve is positioned within the overflow tank A adapted to control discharge of liquid from that tank to the pipe 13 This valve is preferably positioned in a removable plate C which is fastened to the partition member 110 formed an inclined groove D to which the hose and the nozzle are attached,

' ening part F foration F 'tioned on the tubular extension F and'is free ally mounted on the housing A as at (3- A by screws C or any other suitable attaching means. C is a bracket fixed to the plate C and having a sliding bearing portion C within which is slidably mounted a shaft 0 At its lower end the shaft C is provided with a needle point C Adjacent its lower end a pin C is positioned. A valve member C is mounted about the lower end of the shaft 0*. The member C is hollow as shown and the cavity within it is enlarged as at C The pin 0 lies within the cavity C The needle point C is adapted to be seated within the cavity C to close the discharge passage C from the cavity. C is a lever pivoted on the bracket C as at C and carrying at its free end a float C The lever C is slotted as at C and a pin C which passes through the shaft C is posh tioned in the slot C D is a dispensing outlet connection from the dispensing tank A It is preferably provided with a connection portion D to which a hose- D may "be fastened. At its opposite or free end the hose has a nozzle D which is provided with alaterally extending flange D which has a forwardly extending annular flange D In this flange is is provided with a'valve, not shown in detail as its details form no part of the present invention. The function of the valve is to prevent discharge of liquid from the nozzle unless the valve is positively operated to permit discharge. An operating member is indicated for the valve as at D and a handle or lever D which is pivotally mounted on the nozzle portion as at D may be used to open the valve. D is a keeper within which the end of the handle D ispositioned. The keeper serves to limit the extreme outer movement of the handle!) and otherwise prevents its displacement or injury.

E indicates a member or members preferably fastened to the casing A and upon which the nozzle may be hooked when not in use;

F is a short section of pipe positioned opposite a perforation F in the casing A It projects inwardly into the casing and into the overflow chamber formed thereby, as indicated generally I in Figure 2 and in detail in Figure l. The inner end of the member F is cut on as shownand has mounted upon it a'valve member F which is pivoted thereon and adapted to swing downward to the closed position of its own weight, as indicated in Figure 1. At its outer end the member F isprovided with a flange F which may be fastened to the housing or casing A by bolts F or by any other suitable means. Fastened also to the Mounted on the section F and held against displacement by the flange F is a locking and tightin shape and has a cavity F within which is positioned a pin or projection F. F is a laterally projecting handle portion formed as a part of the member F and preferably provided with a per- This member as a whole is posito rotate about it. The pin F may project into the groove 1) of the flange D of the nozzle.

G is a locking member of angular shape as shown in Figures 2 and 4. It is preferably pivot- It is provided with a contacting nose or point G and a perforation G It may be used as indicated in Figure 4 to lock the ring F and when in this posi- A handpiece D As shown it is generally annular tion the nose or contact portion (3 will contact the lever D of the nozzle to hold it in the open position to permit discharge through the nozzle.

H is a closing member provided with a projection or enlargement H within which is an inclined groove H This groove preferably corresponds in size and shape to the groove D in the nozzle flange D Extending from one side of the member H is an extension H which is provided with a perforation H.

I is an electrical conduit or connection from which a conduit I leads upwardly to an electric light I which is situated between the member A and the cover A and preferably over the glass portion A so that the light may pass through into the dispensing tank A and illuminate it and its contents.

J is a baffle plate which may be positioned within the tank A and is preferably on a level with the 10 gallon marker, although this is not anessential feature. It may be fastened to the bottom of the tank by screws J about which are positioned tubular spacers J Positioned on the baiile plate and preferably punched up from it are generally vertical baffle members J It will be realized that whereas I have here with shown and described a practical operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my L.

invention and I wish, therefore, that my showing be taken as in a sense diagrammatic.

The use and operation of my invention are as follows:

When the pump assembly is generally in operdispensing fluidor is hung on the hook-like member E. The pump will be operated to draw fluid l;

in the storage tank A through the pipe B, past the check valves B and B into the pump itself and thence upwardly through the pipe B into the dispensing tank A From this tank it is with drawn through the hose and nozzle and discharged. If for any reason the pump furnishes fluid to the dispensing tank more rapidly than it is withdrawn therefrom the fluid will overfiow into the pipe 15" and into the overflow tank formed by the member A that this tank has been entirely emptied. The valve (3'' will have been seated and the needle point C will have been seated in the valve C so as to close the opening C from it. Therefore, when fluid first comes into the overflow tank it cannot be discharged. When the level of fuel within this tank rises sufliciently it will raise the float member. The first effect of this is to move the shaft C upwardly, thus unseating it and opening the passage C without at first the valve member C". This opening effect requires relatively little lifting effort but as soon as it has occurred some flow takes place through the interior of the member C out through the opening or discharge passage C As soon as this has occurred the sealing effect is broken and furtherupward movement of the shaft (1 in responseto further raising of the float will bring the pin C in contact with the member C and It will be assumed moving I thereafter further upward movement of the member C will raise the valve C unseating it and entirely opening the discharge from the cverflow tank to permit free discharge through the pipe B The flow of fluid which then occurs through the pipe B is to the pump. The check overflow tank through the pipe B valve B prevents, in a great measure at least, the flow of fluid down through the pipe B. If any leakage occurs past the check valve 13 the discharge of fluid from the pipe B into the stor age tank is further resisted by the check valve B 1 If the pump is not in operation the fluid will to prevent disturbance of the liquid within the stand in the pipe B or will flow into the pump and if the pump is of such construction as to make it possible, some fluid may flow upward from the pump, seeking its own level. When the pump is put in operation again fluid is first drawn from the pipe B and the valve C is again seated as soon as the level of fluid within the tank A has been reduced sufficiently to lower the float C to close the valve.

When the apparatus is to be put out of use, for example at night, the motor is, of course, not running and the nozzle is inserted in the tubular section F. Being somewhat longer than that section it raises the valve F into the position shown in Figure l. The flange or" the nozzle is also brought into contact with the flange The ring F is moved so that the pin F engages the slot or groove D and draws it into locking contact. The locking member G is then moved from the position shown in Figure 2 into that shown in Figure 4 and the padlock or other locking means is inserted so as to pass through the perforation G and the perforation F The nozzle is thus locked in this position.

When the member G is moved into the position shown in Figure 4, its contacting end G strikes the lever D and moves it so as to open the discharge valve in the nozzle. Thus the nozzle is open and extends directly into the overflow tank A In this fashion a direct connection is established from the dispensing tank A to the overflow tank A Since the discharge valve in the nozzle is held open, fluid will flow from the tank A through the hose and nozzle B except for such relatively slight leakage as may occur.

When the parts are to be used again if the pump is started it will first draw fluid from the This will remain unobstructed by the valve C until the tank A has been practically emptied. Then the valve will close and further operation of the pump will draw fluid from the storage tank. Thus by holding the fluid in the overflow tank and by having this tank in the pump housing itself, the pumping line from the storage tank to the pump is kept constantly full and the necessity of priming is avoided. When the pump is used again the nozzle, of course, is withdrawn J from the position shown in Figure 4:. If it is the groove H and the movement of the ring draws the parts H H into closing position, closing the opening through the tubular mem" ber F. The member G may be moved into the position shown in Figure 4 when this is the case,

and a locking member, such as a padlock, may

be inserted through the perforation G and the perforation H The dispensing tank may have any sort of indicator mounted in it to show its contents. Such an indicator is suggested at K.

The baffle plate J and its associated parts tend dispensing tank so that when outward flow is shut off, and particularly when it is shut off suddenly, the liquid in the tank is not disturbed and, therefore, it is not necessary to wait until the disturbance which might have been caused subsides before making an accurate reading of the contents of the tank to determine the amount discharged. 1

I claim:

1. A liquid dispensing assembly, including a dispensing tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve positioned to control draining from the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank, a valve for controlling discharge through said hose and means for locking said hose in open position.

2. A liquid dispensing assembly, including a dispensing'tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining'connection from said overflow'tank to said pipe system, a discharge valve, positioned to control draining from the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank, said overflow tank being of a capacity as great as that of the dispensing tank.

3.A liquid dispensing assembly, including a dispensing tank, a pipe. system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve, positioned to control draining from the overflow tank, a hose adaptedto discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank, and means for locking said hose in open position in comt.

munication with said overflow tank, said overflow tank being of a capacity as great as that of the dispensing tank.

4. A liquid dispensing assembly, including a dispensing tank, a pipesystem to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and the check valve, whereby fluid from the overflow tank is returned 'to the pump, a discharge valve, positioned to control draining from the overflow tank.

5. A liquid dispensing assembly, including a dispensing tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a plurality of check valves below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and the check valves, whereby fluid from the overflow tank is returned to the pump,.a draining valve,

positioned to control discharge from the overflow tank.

6. A liquid dispensing assembly, including a dispensing tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and the check valve, whereby fluid from the overflow tank is returned to the pump, a discharge valve, positioned to control draining from the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank.

7. A liquid dispensing assembly, including a dispensing tank, :a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a plurality of check valves below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and vthe check valves, whereby fluid from the overflow tank is returned to the pump, a discharge valve, positioned to control draining from the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank.

8. A liquid dispensing assembly, including a dispensing tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a plurality of check valves below the pump, an overflow tank having an opening to receive a nozzle and. adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and the check valves, whereby fluid from the overflow tank is returned to the pump, a discharge valve, positioned to control draining from the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge'fluid into said overflow tank, and means for locking said hose in open position in communication with said overflow tank.

9. A liquid dispensing assembly,including a dispensing tank, a pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensing tank, a plurality of check valves below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system,-between the pump and the check valves, whereby fluid from the overflow tank is returned to the pump, a discharge valve, positionedto control drainingfrom the overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into' said overflow tank, and means for locking said hose in open position in communication with said overflow tank, said overflow tank being of a capacity as great as that of the dispensing tank.

10. A liquid dispensing assembly, including a dispensing tank, a single pipe system to the dispensing tank, a pump in said pipe system adapted to move fluid to the dispensed tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve, positioned to control draining from the overflow tank.

11. A liquid dispensing assembly, including a storage tank, a dispensing tank, a single pipe system from the storage tank to the dispensing tank, a pump in said pipe system, adapted to move fluid from the storage tank to the dispensing tank, a check valve below the pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve positioned to control draining from the overflow tank.

12. A liquid dispensing assembly, including a storage tank, a dispensing tank, a single pipe system from the storage tank to ihe dispensing tank, a pump in said pipe system, adapted to move fluid from the storage tank to the dispensing tank, a check valve belowthe pump, an overflow tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve positioned to control draining from the overflow tank, said overflow tank being of a capacity as great as that I tank having an opening to receive a nozzle and adapted to receive overflow from the dispensing tank, a draining connection from said overflow tank to said pipe system, a discharge valve positioned to control draining from the overflow tank, 12,5 a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid infio said overflow tank.

14. A liquid dispensing assembly, including a storage tank, a dispensing tank, a single pipe 139 system from the storage tank to the dispensing tank, a pump in said pipe system adapted to move fluid from the storage tank to the dispensing tank, a plurality of check valves below the pump, an overflow tank adapted to receive over- 3.; flow from the dispensing tank, a draining connection from said overflow tank to said pipe system, between the pump and the check valves, whereby fluid from the overflow tank is returned to the pump, a draining valve, positioned to con-- trol discharge from the overflow tank, means for moving said valve in response to fluctuations in the level of fluid within said overflow tank, a hose adapted to discharge fluid from said dispensing tank and adapted to be moved to discharge fluid into said overflow tank, and means for locking said hose in open position in communication with said overflow tank, said overflow tank being of a capacity as great as that of the dispensing tank. 15G

15. In combination in a liquid dispensing assembly, a dispensing tank and an overflow tank therefor said tank having an opening to receive a nozzle, a dispensing hose, a nozzle for said hose, provided with means normally closing it, said nozzle adapted to be inserted into the overflow tank, and a locking member adapted to hold the nozzle open.

16. In combination in a liquid dispensing assembly, a dispensing tank and an overflow tank therefor said tank having an opening to receive a nozzle, a dispensing hose, a nozzle for said hose, provided with means normally closing it, said nozzle adapted to be inserted into the overflow tank, 

